Shibaura K773

The Shibaura K773 is a 1,117 cc (68.2 cu·in) straight-three, liquid-cooled, naturally aspirated diesel engine manufactured by Shibaura.

A 77.0 mm (3.03 in) cylinder bore and 80.0 mm (3.15 in) piston stroke give the Shibaura K773 diesel engine a total of 1,117 cc (68.2 cu·in) of displacement. The compression ratio rating is 23.0:1.

This engine is equipped with glow plugs and oil bath type air cleaner.

The Shibaura K773 diesel engine produced 22.3 PS (16.4 KW; 22.0 HP) at 2,800 rpm of net horsepower and 58.3 Nm (5.9 kg·m; 43.0 lbf·ft) at 1,600 rpm of peak torque.

The breakdown of the engine code is as follows:

K – Engine series
77 – 77.0 mm of cylinder bore
3 – Three cylinders

General information

Engine Specifications
Engine code	K773
Layout	Straight-3, vertical diesel engine
Fuel type	Diesel fuel No.2-D
Production	–
Displacement	1.1 L, 1,117 cm³ (68.2 cu in)
Max. Horsepower (net)	22.3 PS (16.4 KW; 22.0 HP) at 2,800 rpm
Torque output	58.3 Nm (5.9 kg·m; 43.0 lbf·ft) at 1,600 rpm
Injection type	Indirect injection
Cooling system	Liquid-cooled
Fuel system	Fuel injection pump
Starting system	Electric starting
Starting support device	Glow plug in combustion chamber
Power adder	None
Firing order	1-2-3

Cylinder block

Cylinder block
Compression ratio:		23.0:1
Cylinder bore:		77.0 mm (3.03 in)
Piston stroke:		80.0 mm (3.15 in)
Number of piston rings (compression / oil):		2 / 1

Cylinder head

Cylinder head
Valve Arrangement:		–
Valves:		6 (2 valves per cylinder)
Valve seat angle:	INTAKE	45°
	EXHAUST	45°
Valve face angle:	INTAKE	45°
	EXHAUST	45°

Tightening torque

Tightening torque specs
Connecting rod caps:	25.0-27.0 Nm (2.6-2.8 kgf·m; 18.5-19.9 ft·lb)
Main bearing holders:	48.0-53.0 Nm (4.9-5.4 kgf·m; 35.4-39.1 ft·lb)
Crankshaft rear plate:	46.0-54.0 Nm (4.7-5.5 kgf·m; 33.9-39.9 ft·lb)
Flywheel:	56.0-69.0 Nm (5.7-7.0 kgf·m; 41.3-50.9 ft·lb)
Cylinder head:	10 mm bolts: 61.0 Nm (6.2 kgf·m; 45.0 ft·lb) 12 mm bolts: 95.0 Nm (9.7 kgf·m; 70.1 ft·lb)

Maintenance data

Engine speed
Governed speed	Low Idle: 750-850 rpm High Idle: 3,000-3,050 rpm
Valve clearance
Intake valve	0.20 mm (0.008 in)
Exhaust valve	0.20 mm (0.008 in)
Injector opening pressure
Standard	11,760 kPa (1705 psi)
Injection timing
Standard	22° BTDC
Oil system
Recommended engine oil	CD or CE
SAE Viscosity Number	SAE 10W-30, 10W-40
Engine oil capacity	4.0 liters (4.23 US.qts, 3.52 Imp. qts)
Electrical system
Alternator:	12V
Volts:	12V
Ground polarity:	Negative

Applications

The Shibaura K773 engine is used on the following tractors

Model	Years Produced
Ford 1510	1983-1986

Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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General information

Cylinder block

Cylinder head

Tightening torque

Maintenance data

Applications

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